Projector screen



FIG. 1 is a perspective view of a projector screen showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereof; and,

FIG. 4 is a top plan view thereof. 

CLAIM The ornamental design for a projector screen, as shown and described. 